Lamp-stove



(No Model.) 2 Sheets-Sheet' 1.

J., H. IRWIN. LampfStove.

l No. 230,636. Patented Aug. 3,1880.v

(No Model.) 2 sheets-sheet 2.

J. H. IRWIN.

Lamp Stove. No. 230,636. Patented Aug. 3,1880.

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M I l NJPETEHS, PHOTOJ ITNOGRAPNER. WASMINGYON4 D C.

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PATENT JOHN H. IRWIN, OF MOR'ION, PENNSYLVANIA.

LAM P-sTovlE.

SPECIFICATION forming part of Letters Patent No. 230,636, dated August3, 1880.

Application filed April 16, 1880. (No model.)

To all whom it may concern:

Be it known that I, JOHN H. IRWIN, of Morton, in the county of Delawareand State of Pennsylvania, have invented certain new and usefulImprovements in Lam p-Stoves, of which the following is a full, clear,and exact description, reference being .had to the accompanying drawingsand to the letters of reference marked thereon, the same not having beento my knowledgel heretofore patented in any foreign country.

My invention has relation to that class of stoves wherein the air forthe support of combustion is delivered to the under side of theburner-plate through channels or conduitsfed from the exterior air, theincoming air and outgoing products of combustion (one or both) beingcontrolled in direction by deflecting-surfaces in such manner as thatany disturbances in the surrounding atmosphere shall always insure anaccelerated outflow of the products of combustion, or an acceleratedinflow of fresh air to feed the iiame, or both together, as here toforefully explained by me in previous applications for Letters Patent onstoves, the dates of filing of which will be given hereinafter.

The principal object of my present invention is to provide increasedsecurity in the matter of insuring an injection of fresh air to feed thefia-mes; and a further object is to provide such an arrangement of partsas will tend toward simplicity of construction, ease of management andcare, increased heating-surface, and facility of packing fortransportation,&c.

To accomplish these objects the invention involves the employment of asecondary airfeeding conduit leading-to the under side of the slottedburner-plate and'adapted to supply a volume of fresh air independentlyof the principal or primary conduit, a hin ged burn er-plate, and otherdetails or peculiarities of construction and arrangements of parts, allof which will be hereinafter rst fully described, and then pointed outin the claims.

In the drawings, Figure 1 is a sectional view of a stove constructed andarranged to operate in accordance with my improvements, showin g anindependent air-feeding conduit, the removable or detachable chimney,and other details of construction. Fig. 2 is asimilar view of a stove,showing the application of the re- A is the oil-pot, and B B thewick-tubes., se-

cured therein in any preferred way. C is the pot-hole plate, maderemovable, and intended for the support of the cooking-utensils.

D is the main air-feedin g conduit, communicat-ing with the under sideof the burner-plate and supplying fresh air for the support ofcombustion, the conduit being provided at the cntrance with deflectingplates, which so direct impinging currents as to cause them either toenter the conduit or to induce an accelerated outdow from the dischargeend of the circuit, either of which results will secure an increasedupward flow of air .through the slotted burnerplate, and thus increase,rather than retard, combustion, as I have already fully explained inapplications for patents the dates of which are mentioned hereinafter.

In the drawings, Fig. 1, a broken circuit is shown, and at the point ofrupture l place a combined injector and ejector composed of thedeiiectin'g-plates a b c d c, and in all respects substantially likewhat is now known as the perfect injector and ejector-such, forinstance, as shown in my patent of May 19, 1874, No. 150,958, though forthe purposes of this part of the invention any device located at thispoint which will cause an injection on the side of the conduit leadingto the burner-plate or an ejection from the other side, or bothtogether, will answer the purposes.

While the injector and ejector at the mouth of the conduit will,` underordinary circumstances, maintain the flame in a steady condition, it isapparent that a current below this mouth might be moving withoutsensibly affectin g any air with respect thereto; and therefore I locatethe second combined injecting and ejecting device at a point in theconduit where it may beimpinged upon by all currents likely to strikethe stove below the lend or main entrance of the conduit, and from thisIOO arrangement it will be seen that the sensitiveness of the structureto the beneficial influence ot air-currents will be greatly augmented,each current being made to increase the comv bustion, and none capableof retardin g it.

The flame may be said to be located within a circuit of air-currentscontrolled in direction and made to follow one course-viz, from themouth of the feed-air conduits through the conduit upwardly through theburnerplate, under the top plate, or under or through Whatever characterot' vessel or utensil may be placed thereon, and then escaping at apoint in close proximity to the inlet ot'4 the conduit.

The illustration of the ruptured conduit will serve to show that thecircuit above-named may be broken at any point, provided there be`devices arranged in connection with the break which will mechanicallycompel an increased ow of air through it in the proper direction tosupport combustion. As many ot' these breaks as desired may be made inthe circuit, provided that at each one the proper deilecting-surtaces bearranged. Whetherthe circuit be completed, as in Fig. 2, or broken, asin Fig. 1, or arranged in any one ot a multitude ofways, I ind itdesirable and advantageous to employ, in addition to the primaryairfeeding conduit, a second conduit, adapted to deliver air to theunder side of the burnerplate and operating independently of the primaryor principal conduit.

One form ot' such a secondary independent conduit is indicated in Fig.1, whichwill serve as an illustration of the principles of this partofthe invention.

The main feeding-tube D discharges into a channel or chamber, E,communicating with .the under side ot' the slotted burner-platerepresented at F.

. Surrounding chamber E is a conduit, G, also discharging beneath F, andhaving no communication with E, the contents ot' the two conduits beingdischarged at about the same level beneath the burner-plate. The openend of G is provided with injector-surfaces such, for instance, as at fg h-so that arcurrents impin ging thereon shall be injected.

The air injected through Gr will augment the supply of feed-air, andsince the burner-slot is ot' large area compared with thedischargeopening of chamber E, the-tendency of the injected air willalways be upwardly through the burner-slot, or in the proper directionfor the support of combustion.

The independent air-feedin g current may be increased in volume byexterior disturbances which do notatiect the main supply, and,converscly,tl1c increased supply might be augmented independently of thesecondary current, the two together, however, producing an extremelysensitive and efficacious arrangement.

The secondary conduit may be variously constructed and arranged. Insteadof carrying its contents beneathl) and E, it might be made to deliverthem at a point above the outlet ot' E, and instead of' being made tosurround E, one or more tubes might be carried therethrough and made todeliver their contents at any preferred point.

Instead of being made to surround the chimney or made annular in form,any form might be adopted, it being only necessary that the effects ot'ejection are guarded against, and` that the main and subordinatecurrents are independent of each other. This principle may be appliedupon any form of stove wherein the direction of the currents are undercontrol, and it may be stated that the same principle ot' operation isadvantageously applicable to various illuminating devices wherein thecurrents are controlled or counterbalanced, as in many forms of lampsand lanterns patented to me, particularly of the class shown in mypatents of May 28, 1867, January 7, 1868, and June 14, 1870, theapplication of the principle thereto requiring some changes as to formand location or arrangements of parts, all ol which will be embodied infuture applications for patents.

The oil-pot A is made to extend beneath the suliierstructure of thestove, and forms the base thereof, being supported upon suitable feet orlegs a. a, as plainly shown. Upon the top ot' the oil-pot are suitablelugs l.. which are made to support the upper parts ot' the struct-ure ata little distance above the top of the oilpot, either directly, as inFig. 1, or through the medium ot'correspondin g projections 1), as inFigs. 2 and 3.

H is the chimney, made to extend down to the burner-plate F, and formingthe flamechamber.

rEhe assembling-bolts K unite the plate I with base-plate J, and serveto maintain these parts in their proper relative positions.

The top plate, C, is made removable from the stove-body, and may besecured in place by any of the known means.

Between plates I and C there is ampie room for the ladjustment ofchimney H, which, for all ordinary purposes ot' lighting and cleaningthe burners, may simply be lifted up fromover the burner-plate, beingguided bythe Walls of the aperturein plate I, and it finds its supportthereon when down in its place.

To hold the chimney H in its elevated position, slightly above theburner-plate, I attach to the chimney' a hinged brace, L, (shown indotted lines, Fig. 1,) which brace maybe turned down when the chimney iselevated, and ina-de to rest upon any convenient part of the lowerportion of the stove, thus maintaining the chimney in its elevatedposition. When not in use brace L is closely folded against the wallofthe chimney and out of the way.

rlhe whole upper part ofthe structure may y be hinged to the oilpot, asat fm a, Fig. 1, and

the upper part thrown back upon this hinge Whenever desired.

On the exterior ofthe top flue, O, I hinge a brace, L', (shown in dottedlines,) the same being of sufficient length to rest upon the top of theoil-pot, and, when the upper parts of the IOO IIO

stove are tipped back, serves as'r a support therefor. maintaining themin the required position. When not in use brace L' finds a convenientlodgment against the wall of liue O.

The burner-plate F is preferably hinged, as plainly shown at r, Fig. 2,so that it may be readily thrown back from over the wick-tubes wheneverrequired, and be as conveniently replaced, without the usual necessaryadjustments.

The upper part of the stove is enlarged, as at T T, beyond the walls ofthe chimney, affording an enlarged expansion-chamber for the combinedair and gases, in which enlargement the products of combustion, Sto.,find lodgment, imparting their hea-t effectually to an enlargedradiating-surface; and this construction enables me to considerablyincrease the size of the pot-hole plate, or the number of potholestherein, without detracting from the heatgiving qualitiesof the stove.With this enlargement any number of wick-tubes may be employed, and thegreaterthenumber of tubes the greater may be the enlargement, carryingthe stove out to any desired dimensions.

In either form of stove represented it will be observed that thefresh-air conduit is supported from the rear of the oil-pot by suitablestandards prepared for the purpose.

The inclined conduit shown in Fig. 2 may be broken and provided withinjecting and ejecting surfaces', same as in Fig. 1, and theburnerplatein Fig. 1 may be hinged, same as in Fig.2.

The secondary and independent air-conduit G, or'its equivalent, may beadopted, in connection with the arrangement shown at the base of thestove in Fig. 2, as well as in any other stove of the same general type.

The slotted burner-plate may bein the ordinary form of cone-plate, or itmay be flat and simply perforated for the passage of the flame, asindicated in Fig. 3, or provided with downwardly-inclined surfaces, asin Fig. 2, all of which forms are well known to be old.

The continuous air and gas circuit within which the dame is located, andsome ofthe peculiarities of construction indicated i Fig. 2, are madesubjects of claims in prior applications for patents filedAugnst8,1879,and February 14, 1880, (the former patented April 13,1880,) and therefore it is not intended to make any claims to suchfeatures herein, except in.

the relative combinations or arrangements hereinafter specied.

Having now fully described my invention,I will add that in practice thefeatures constitnting the improvements are found to admirably answer theseveral-purposes and objects of the invention, as previously stated. Y

What I claim as new herein, and desire to' secure byLetters Patent, is-

1. In astove of the character herein specified,

. wherein the. burners are located within a cir-' cuit having mainoutlet. and inlet openings in close proximity to each other, thefresh-air conduit, broken between the inlet and burners and providedwith air-deeeting surfaces at the point of rupture, substantially as andfor the purposes set forth.

2. They combination, with an air-conduitadapted to supply fresh air tothe under side of the burner-plate, and in which the direction of thefeed-air is controlled by means of airdetlecting surfaces operating inconjunction with said conduit, of a second conduit, independent of thefirst named, adapted to supply an independent volume of air to the underside of the burner-cone to assist in feeding the flame, substantially asand for thc purposes -set forth.

3. In combination with the bnrnerplate, a chimney discharging into aflue beneath the top or pot-holeplate, said chimney being madeadjustable in, the opening in the bottom of said flue and provided withahin ged brace formaintaining itin its elevated position, substantiallyas shown and described.

4. The combination, as before set forth, of air-duct D, chimney H, andheating-due O. forming together an air and gas circuit of the characterdescribed, Within which the burners are located, the oil-pot extendingbeneath the superstructure, and air duct D being supported thereon,substantially as shown and described. A

5. The combination of air-duct D, having an injector at its mouth andsecondary ejeeting and injecting surfaces between its extremities,burner-plate F, chimney H, and heating-flue O, discharging at apointover the air-inlet and provided with an ejector at its outlet,substantially as shown and described.

6. vThe combination of air-duct D, having an injector at its mouth andejecting and injecting surfaces between its extremities, burnerplate F,independent air-flue G, chimney H, and heating-flue O, discharging at apoint over the air-inlet, and provided with an ejector at its outlet,substantially as shown and described.

7. The combination of the oil-pot, the upper parts of the stove hingedthereon, as at m n, and movable, as explained, and the brace L', hinged,to the wall of the heating-due opposite the hinge beneath the top plateof the stove, and serving to maintain the swinging parts in theirelevated position, the bottom of the l'OO IOS

IIO

brace resting upon the lower portion of the J. H. IRWIN.

Witnesses:

WORTH OsGooD, ARTHUR M. PIERCE.

IZO

